Printing device



Sept. 22, 1936-- w. T. GOLLWITZER I 2,055,009

' PRINTING DEVICE Original Filed Nov. 21-, 1931 2 Sheets-Sheet 1 26' JOHN DOE 27 STATE 5T.

CHICAGO, ILL.

Septa 22,1936. w. T. GOLLWITZER 0 PRINTING DEVICE.

Original Filed Nov. 21, 1931 2 Sheets-Sheet 2 are properly installed. The stem of each tab is inserted into a set of keepers by first being passed below the keeper 25 and through the slit at the lower end thereof, then over the keeper panel 26 on the back of the frame, and then through the slits at the end of the lips of the keeper 21 so that the end of the stem of the tab lies on the face of the frame. The shoulders 28 on the edgesof the tab engage the adjacent legs 26 at the upper edge of the panel 26 to limit the movement of the tab inwardly on the frame. To prevent accidental outward movement of the tabjinthe keepers and avoid accidental disengagement and displacement of the tab, I provide retaining means which consists of a retaining device; on the tab and a cooperating means on the frame. Each of the tabs described herein includes a retaining device adapted to cooperate with a keeper of the set of keepers into which the tab is inserted to thereby be retained against undesired displacement from the frame. f

.- The tab illustrated in Fig. 4 consists of a head 29 and a stem 30. The tab is slit and struck up between the edges thereof and intermediate of the end portions of the head and stem to form a lip 3| providing an upwardly facing shoulder spaced from the adjacent face of the stem and disposed below the shoulders 28. 7 Since the lip is spaced from the edges of the tab it may be of substantial size without'weakening the tab and consequently it is made large enough to effectively resist accidental distortion andittherefore securely fastens the tab in position. This tab is inserted into a set of keepers in the manner previously described. Inasmuch as thetab is made of a resilient materialthe lip 3| flexes as it slides past the panel 26 during insertion of the tab, and as soon as the shoulder provided by the lip clears the lower edge of the panel the lip springs outwardly to thereby align the shoulder with the lower edge of the panel. To do this requires but little force and hence the tab maybe easily in,- serted into a set of keepers. When the tab is positioned the shoulders 28 and the shoulder on the lip cooperate to prevent longitudinal movement of the tab and hence displacement of thetab from the keepers is effectively prevented.

- When the tab is to, be removed from the keep.- ers, as when it is desired to change the classification of the printing device, a suitable instrument is employed and the end of the instrument is rested on the lip 3| and sufficient pressure is applied to clear the shoulder on the lip from alignment with the edge of the panel 26. As' best illustrated in Fig. 3, when the tab is in proper position, the lip 3| is opposite one of the lips of the keeper 21 and consequently there is clearance below the lip 3| and hence when pressure is applied to clear the shoulder from the edge of the panel the stem of the tab as well as thelip 3| may bend slightly so that the shoulder is clear of the edge and the tool is preferably so inclined that force is exerted in a directionto move the :-tab.outwardly of the frame as well asto clear the shoulder and consequently as soonas the shoulder clears the edge of the panel, the tab so moves that thelip 3| is disposed under the panel 26 whereupon the head of the tab may be gripped by the fingers and, as is apparent from an inspection of Fig.3, the-tab may then be easily withdrawn from the frame since there is no'obstacle in the path of the shoulder on the lip to prevent removal. By reason of the opposite disposition of the shoulders, the tab-is-locked in the is positioned on the tab adjacent the shoulders 28. When the tab is inserted into the keepers in the manner previously described and the shoulders 28 engage the adjacent legs 26' at the upper edge of the panel 26, the lip 35 lies below and engages the keeper 25, and the inclinations of the keeper 25.and the lip 35 are preferably similar so that the entire adjacent faces of the keeper and the lipcontact with each other. Since the tab is made of a resilient material, the lip springs into engagement with the keeper and prevents displacement of the tab until the tab is gripped and suflicient force is exerted to overcome the resiliency of the lip 35 and whenthis is done the lip is forced into the plane of the tab as the tab ismoved outwardly and thus the lip is disengaged from the-keeper and the tab removed from the frame. r

The tab illustrated in Fig. 12 includes ahead. 36 and a stem 31. The tab is slit and struck up betweenthe edges and intermediate of the end portions thereof to provide'a boss 38 of substantialsize and including an apex and oppositely inclined sides extending longitudinally of the tab. The boss 38 is positioned adjacent the shoulders '28. When the tab is inserted into a set of keepers in the manner previously described and the shoulders 28' engage adjacent legs 26 at the upper edge of the panel 26, the upwardly facing inclined surface of the boss lies below the keeper 25 and preferably'the keeper and the cooperating inclined side of the boss are similarly inclined so that the entire adjacent faces of the keeper and boss contact with each other. The boss 38 functions similarly to' the lip 35 but clearly greater force will need be applied to disengage the boss 38 from the keeper '25 than will need be applied to disengage the lip 35 from the keeper because the lip has a free edge and consequently may be more easily deformed. Thus the tab illustrated in Fig. 12 is more securely held in position and greater force must be exerted to remove this tab from the frame.

I have shown and described my invention as used with a printing device embodying a frame and a removable printing plate, but it is to be understood that it is equally adapted for use on a one-piece printing device. shown preferred forms of my invention but it is to be understood that these are susceptible of variation and modification and I therefore do not 'wish to be limited to the precise details set forth but desire to avail myself of such changes and alterations asfall within the spirit and scope of the following claims.

I claim:

1. In a printing device which has a frame provided with a set of aligned keepers comprising means struck from the frame, selected of said means having legs at the side edges thereof conmeeting said means to the frame, the combination therewith of a tab embodying an integral head and stem, said stem having continuous side edges and being insertable into said set of keepers past the legs and neatly fitting in the keepers and between the legs to prevent relative movement, between the tab and frame, and a resilient retaining device on the tab of sufficient strength Further, I haveto retain its shape after repeated insertions into and removals-of the stem from the 'keeperasaid retaining device being positioned on said tab between the side edges and' intermediate the'ends thereof and :being adapted to cooperate with meanson the frameto preventaccidental displacementof the tab from'the frame after insertion'of said stem into said set'of keepers.

2. In a printing device which has a frame provided with'a set of aligned keepers comprising means struck fromthe frame, selected of said means having legs at. the side edges thereof con necting said means to the frame, "the combination therewith of a tabeinbodying an integral head and stem, said stem having continuous side edges and being insertable 'into said set of keepers past the legs and neatly fitting in the keepers and between the legs to prevent relative movement between the tab and frame, said tab having a shoulder thereon engageable with one of said legs to limitinward movement of the tab when the stem is inserted into said set of keepers, and a resilient retaining device on the tab of sufficient-strengthto retain its shape after re-' peated insertions into and removals of the stem from the keepers, said retaining device being positioned on said tab between the-side'edges and intermediate-the ends thereof and being adapted to cooperate with means on the frame to pre--' vent accidental displacement of the tab from the frame after insertion of'said stem into said set of keepers and engagement of said shoulder with said'leg. Y

-3. In-a printing device-which has a frame provided with a set of alignedkeepers comprising means struck from the frame, selected of said means having legs at the side edges thereof connecting saidmeans to the frame, the combination therewithof-a tab embodying an integral head and stem, said stem'having continuous'side edges and being insertable into said=set-'of'keepers past the legs and-neatly' fitting in the keepers and between the legs t'o' prevent relative movement between the tab and frame, and a resilient re taining device on the tab oi' sufficient strength to retain its shape after repeated insertions into and removals of the stem from the keepera said retaining device being positionedon'said tab between the side edges and intermediate the ends thereof andbeing adapted tocooper'ate with selected of the means struck fromthe frame to prevent'accidental' displacement of the tab from V the frame after insertion of said stem into said set of'kee'pers.

4,1'n a'printing device which has a frame-slit and; struck up'to provide a set of aligned keepers of which atleast one is inclined relative to the face of the frama-the combinationofatab having-a shoulder thereon adapted'to limit inward movement'ofthe tab when it is inserted-into said set of keepers, and means on said tabiineluding a face inclined similarly to an -inclined keeper of the set-into whichitis inserted, the in clined faceof said means engaging said inclined keeper to prevent accidental outward-movement of said tab in said keepers.

5. In a printing device which has a frame provided with a set of aligned keepers comprising means struck from the frame, selected of said means being inclined longitudinally thereof relative to the face of the frame and certain of said means having legs at the side edges thereof connecting such means to the frame, the combinahead and stem, said stem having continuous side between said tab and frame, and a resilient ins clined lip on theitab of sufficient strength to retain its shape after repeated insertions into' and removals of the stem from the: keepers, said lip being positioned on'the tab between the side edges and intermediate the ends of the tab and being adapted to cooperate with selected of the inclined means on the frame to prevent accidental displacement of the tab. from the frame, after insertionof said stem into said set of keepers.

6. In a printing device which has a frame pro vided with ase-t of aligned keepers comprising means struck-from .the frameyselected of said means being inclined longitudinally thereof relative to the face of the frame and certain of said means having legs at the side edges thereof connecting such meansto theframa'thecombinationtherewith of a tab. embodying an integral head and stem, said stem having continuousside' edges and being insertable into said set ofkeep ers past the legs and neatly fitting in the keepers between the legs toprevent relative movement between said tab and frame, said tab having a shoulder thereon engageable with one of said legs to limit inward amovement .of the tab when the stem is inserted into said set of keepers, anda resilient inclined lip on the tabof sufficient strength to retain its shape after repeated insertions into and removals of the stem fromthe keepers, .said lip being positioned-on the tab-betwe enzthe side edges. and intermediate the ends of the tab and being adapted .tocooperate with I selected of the inclined means on the frameto prevent accidental displacement of the tab from the frame after insertion of said stem into said set of keepers and engagement of saidshoulder with said leg. 4

7. .In a printingdevice which has aframe provided with a set of aligned keepers: comprising means struck from the frame, selected of said means being inclined'longitudinally thereof relative. to the face of the frame and certainfof said meansehaving legs at the side .edges thereof connesting such means to. the 'frame,.the combination therewith of a tab embodying an integral head and stem, said stemhaving continuous side edges and beingin-sertable intosaid set of keepers past the legs and neatly fitting inithe keepers be tween the legs to prevent relativemovement between said tab and'frame, and a resilient retainingdevice on the tab of sufficient strength to retain its shape after repeated insertions into and removals of the stem from the keepers, said retaming device being positioned on the tab between the side edges and intermediate the ends of the tab and'being adapted to cooperate with selected of the inclined meansstruck from the frame to prevent outward movement of the tab in said keepers until pressure'isapplied tosaid device to disengage it from the means with which it cooperates. v .8. In a printing device which, has a. frame provided with-a set of -.alignedf.keepers comprising means struck from the frame, selected of said means being inclined longitudinally thereof relative to the face of the frame tospace free edges thereon from the adjacent face of the frame and certain of said means having legs at the side edges thereof connecting such means to the frame, the combination therewith of a tab embodying an integral head and stem, said stem having continuous side edges and being insertable into said set of keepers past the legs and neatly fitting in the keepers between the legs to prevent relative movement between said tab and frame, and a resilient lip struck from said tab between its side edges and intermediate its ends and providing an upwardly facing shoulder adapted to cooperate with the free edge of selected of the means struck from the frame to prevent accidental displacement of the tab from the frame after insertion of said stem into said set of keepers;

9. In a printing device which has a frame provided with a set of aligned keepers comprising means struck from the frame, selected of said means being inclined longitudinally thereof relative to the face of the frame to space free edges thereon from the adjacent face of the frame and certain of said means having legs at the side edges thereof connecting such means to the frame, the combination therewith of atab embodying an integral head and stem, said stem having continuous side edges and being insertable into said set of keeperspast the legs and neatly fitting in the keepers between the legs to prevent relative movement between said tab and frame, said tab having a shoulder thereon engageable with one of said legs to limit inward movement of the tab when the stem is inserted into said set of keepers, and a resilient lip struck from said tab between its side edges and intermediate its ends and providing an upwardly facing shoulder adapted to cooperate with the free edge of selected of the means struck from the frame to prevent accidental displacement of the tab from the frame after insertion of said stem into said set of keepers and engagement of the shoulder on said tab with said leg.

10. In a printing device which has a frame provided with a set of aligned keepers comprising means struck from the frame, selected of said means being inclined longitudinally thereof'relative to the face of the frame and certain of said means having legs at the side edges thereof connecting such means to the frame, the combination therewith of a tab embodying an integral head and stem, said stem having continuous side edges and being insertable into said set of keepers past the legs and neatly fitting in the keepers between the legs to prevent relative movement between said tab and frame, said tab having a shoulder thereon engageable with one of said legs to limit inward movement of the tab when the stem is inserted into said set of keepers, said tab being slit and struck up between the side edges thereof to provide a substantially medially located inclined resilient lip projecting from a face of the tab and adapted to cooperate with selected of the inclined means and the engagement of said shoulder with said leg to prevent accidental displacement of the tab after insertion of said stem into said set of keepers.

11. In a printing device which has a frame provided with a set of aligned keepers comprising means struck from the frame, selected of said means being inclined longitudinally thereof relative to the face of the frame and certain of said means having legs at the side edges thereof connecting such'means to the frame, the combination therewith of a tabembodying an integral head and stem, said stem having continuous side edges and being, insertable into said set of keepers past the legs and neatly fitting in the keepers between the legs to prevent relative movement between said tab and frame, said tab being slit and struck up between the side edges thereof to provide a substantially medially located inclined resilient lip projecting from a face of the tab and providing a downwardly facing shoulder and being adapted to cooperate with selected of the inclined means on the frame to prevent accidental displacement of the tab after insertion of said stem into said set of keepers. r

12. In a printing device which has a frame provided with a set of aligned keepers comprising means struck from the frame, selected of said means being inclined longitudinally thereof relative to the face of the frame and certain of said means having legs at the side edges thereof connecting such means to the frame, the combination therewith of a tab embodying an integral head and stem, said stem having continuous side edges and being insertable into said set of keepers past the legs and neatly fitting in the keepers between the legs to prevent relative movement between said tab and frame, said tab having a shoulder thereon engageable with one of said legs to limit inward movement of the tab when the stem is inserted into said set of keepers, said tab being slit and struck up between the side edges thereof to provide a substantially medially located inclined resilient lip projecting from a face of the tab and providing a downwardly facing shoulder, said lip cooperating with selected of the inclined means and the engagement of the shoulder on the tab with said leg to prevent accidental displacement of the tab after insertion of said stem into said set of keepers. V V

13. -An index tab slit and struck up inwardly of the edges and intermediate of the ends thereof to provide a boss including oppositely inclined faces extending longitudinally of the tab and merging thereinto.

14. An index tab including a head and a stem and having a shoulder on a side edge thereof, said tab being slit and struck up intermediate the ends thereof to provide a boss adjacent said shoulder. said boss having oppositely inclined faces extending longitudinally of the tab and merging thereinto.

15. An index tab having a head and a stem and a downwardly facing shoulder on a side edge thereof, said tab being slit and struck up between its side edges to form a substantially medially located lip, providing a downwardly facing shoulder positioned in determined location relative to the downwardly facing shoulder on the side edge of the tab, said lip cooperating with the downwardly facing shoulder on the side edge of the tab to prevent accidental displacement of the tab when it is installed in the keepers on a printing device.

' WALTER T. GOLLWITZER. 

